<template>
  <div>
    <div class="search">
      <input v-model="keyword" class="search-input" type="text" placeholder="输入城市名或拼音" />
    </div>
    <div class="search-content" ref='searchResult' v-show='keyword'>
      <ul>
        <li class="search-item border-bottom"
          v-for='city in list'
          :key='city.id'
          @click="handleCityClick(city.name)"
        >
          {{city.name}}
        </li>
        <li class="search-item border-bottom" v-show='hasNoData'>没有找到匹配数据</li>
      </ul>
    </div>
  </div>
</template>

<script>
import Bscroll from 'better-scroll'
export default {
  name: 'CitySearch',
  props: {
    cities: Object
  },
  data () {
    return {
      keyword: '',
      list: [],
      timer: null,
      scroll: null
    }
  },
  computed: {
    hasNoData () {
      return !this.list.length
    }
  },
  mounted () {
    this.scroll = new Bscroll(this.$refs.searchResult)
  },
  watch: {
    keyword () {
      if (this.timer) {
        clearTimeout(this.timer)
      }
      if (!this.keyword) {
        this.list = []
        return
      }
      this.timer = setTimeout(() => {
        const result = []
        for (let i in this.cities) {
          this.cities[i].forEach(value => {
            if (value.spell.includes(this.keyword) || value.name.includes(this.keyword)) {
              result.push(value)
            }
          })
        }
        this.list = result
      }, 100)
    }
  },
  methods: {
    handleCityClick (city) {
      this.$store.commit('changeCity', city)
      this.$router.push('/')
    }
  }
}
</script>

<style lang='stylus' scoped>
@import '~styles/varibles.styl'
.border-bottom
  &:before
    border-color: #ccc
.search
  background: $bgColor
  padding: .1rem
  .search-input
    box-sizing: border-box
    text-align: center
    width: 100%
    height: .62rem
    line-height: .62rem
    border-radius: .06rem
    color: #666
    padding: 0 0.1rem
.search-content
  z-index: 1
  overflow: hidden
  position: absolute
  top: 1.68rem
  right: 0
  left: 0
  bottom: 0
  background: #eee
  text-align: left
  .search-item
    padding-left: .2rem
    line-height: .76rem
    background: #fff
</style>
